Magnetic vibrator.



F. V. SMITH.

MAGNETIC VIBRATOR.

APPLICATION FILED DEC. 20, 1910.

Patented June 13, 1911.

E a/1% fl l izz'f,

inventor Acrny;

' periphery UNITED STATES PATENT OFFICE.

, 1 FRANK V. SMITH. OF FLORISTON, CALIFORNIA.

MAGNETIC VIBRA'QIOR.

I Specification or Ietterslatent;

Application filed December 20, 1910. Serial No. 598,291.

To all whom itmay concern:

Be it known that I, FR'ANK V. SMITH, a citlzen of the. United States, residing at Flo'riston, in the county of Nevada and State cit-California, have invented a new and useful Magnetic Vibrator, of which the following is a specification.

The device forming the subject matter of this application, is'adapted to be employed in an alternating current circuit, to secure the reciprocation of a movable element, the construction being adapted to be employed for massage, indental operations, and elsewhere, where the rapid reciprocation of a tool-holding member is desirable.

It is the object of the invention to provide a movable memberor holder, of novel and improved form, to provide novel means for housing and for actuating the holder, and to provide novel means for regulating and adjusting the movement'of the holder.

In the'drawings: Figure 1 is a longitudinal section; Fig. 2 is a transverse section upon the line A- B of-Fig. 1; and Fig. 3 is a fragmental transverse section at right angles to the icutting plane of Fig. 1.

In carry ng out the invent-ion there is provided a base plate 1, having an extension 2, adapted tofit in the opening 3 of a handle 4. The jelectro-magnet rests upon the base plate 1, U-shapedcor'e 5, the arms of which are denoted by the numeral 6. Upon .these arms 6 spools 7, a conductor 14 is wound, as shown at 8,

the terminals of the conductor being carried through the opening 3 in the handle 4, as

shown at 9 and united with a plug 10, of any desired form, whereby the device may bebrought into an electric circuit. The coils 8 of the electro-magnet are covered, as shown at.11. The ends of the arms f the core'5 extend through openings in the top plate 12, which rests upon the ends of the' spools 7.- Boltsf15 are extended through the base plate 1, v he top plate 12,-and through the of a cover 18, which, in its central portion is s 'aced apart from the top plate 12. The bo ts 15.are preferably headed, as

shown at 16, 'to engage the base plate 1, the opposite extremities of the bolts 15 carrying nuts 17 which, engaging the periphery of the cover 18, serve to hold the cover and the plates The cover 18 is provided with an upstandneck 1%, disposed above and between and comprises a laminated.

7 aredisposed, and about the spools in place upon the electro-magnet the arms 6 of the core 5. The plates 1' and 12, and the middle portion of the core 5 are provided with alined, polygonal openings, in which slides a rod or holder 20, this holder being provided with a threaded end Patented June.13,19 11.

pression spring 25, the lower end of which is fitted about the neck 19 of the cover18. Threaded upon the extremity of the portion .75 21 of the holder, is a wing nut 27, provided i with, a projecting neck 26, adapted to'fit in one end of the spring 25.

The invention further includes an arcuate bracket 50,,extended laterally, as shown in I Fig. 3, around the middle portion of the electro-magnet, the ends of the arcuate bracket 50 engaging the holder 20, above and below the middle portion of the core 5 t'o'constitute a truss for the holder. The bracket 50 is held in place upon the holder 20 by means of set screws 51 or the like, threaded into the extremities of the bracket;

The intermediate portion of the bracket 50 which is disposed laterally beyond-the central portion of the core 5, is equipped with an enlarged head 52, provided with a threaded opening 53, the axis of which is positioned substantially at right angles'to the axis of the holder 20. In the lower end 54: of the bracket 50 there is another threaded opening, of a common diameter with the opening 53, the axis of this lastmentioned opening being alined with the .axis of the holder 20.- The holder 20isadapted to. secure a reciprocation of. a tool of any sort. If desired, the tool may consist of a' resilient cup-shaped head 28, of the sort ordinarily employed in massage, the head 28 being provided with threaded stem 29. This stem 29 may be mounted in the threaded opening in the end 5% of the bracket, or it may be mounted in the threaded opening 53. This construction permits the axis of the head 28 tobe disposed in alinement with the axis of the holder 20, or at right. angles to the axis of the holder.

hating current falls, during the reversal of the current, so that the pulling effect of the electro-1nagnet upon the armature, is no longer greater than the thrusting efie'ct of the spring 25, the spring 25 Will, acting against the Wing nut 27, move the holder 2 in an opposite direction. When the poten tial of the current again rises, the electromagnet Will act, as hereinbetore stated, to move the holder 20, and to compress the spring 25, the reciprocation or" the holder 20, of course, taking place with great rapidity. By rotating the Wing nut 2? upon the threaded end 21 of the holder, the spring 25 may be compressed, or permitted to expand, the stroke of the holder 20, in the one instance, being shortened, and the stroke of the holder 20, in the other instance, being lengthened.

Having thus described the invention, "What is claimed.is:

1. In a device of the class described, an electro-magnet; plates applied to opposite ends of the magnet; a cover restin upon one of said plates; securing devices uniting the plates and the cover; a holder reciprocating in the plates and in the cover; an

asses? armature upon the holder beneath the cover; a spring is aring at one end upon the cover; and a device upon the holder for engaging the other end of the spring to adjust the tension thereof;

in a device of the class described, an electroqnap'net; plates applied to the ends of the electro-magnet, one of the plates being provided with an extension; a handle upon the extension; the terminals of the zinding of the electrdmagnet being extended through the handle; a holder reciprocating in the plates and in the magnet; a cover applied to one of said plates; means for holding the plates and the cover together; an armature upon the holder, be neath the cover, one end of the holder being threaded and extended through the cover; a nut upon the threaded portion of the holder; and a spring positioned between the nutand the cover 3. in a device of the class described, an electro-magnet; a holder slidable in the magnet; an armature secured to the holder; means for retracting the armature from the magnet; and an arcuate bracket, extended around the magnet and united with the holder upon both sides of the magnet, the bracket having elements for the reception of a tool, one of which elements is alined with the axis of the holder, the other of which elements is disposed at an angle to the axis of the holder.

in testimony that I claimthe foregoing as my own, I have hereto alfixed my signature in the presence of two Witnesses.

FRANK V. SMITH.

iVitnesses W. "W. Gooniucn, J. Li). Wants. 

